Question 1

Iron(III) chloride hexahydrate is used as a coagulant for sewage and industrial wastes.What is its formula?

Accepted Answer

A)  Fe(Cl·6H2O) 3
B)  Fe3Cl·6H2O
C)  FeCl3(H2O) 6
D)  Fe3Cl(H2O) 6
E)  FeCl3·6H2OF) B) and D)
G) A) and D)

Question 2

C(graphite) and C(diamond) are examples of

Accepted Answer

A)  isotopes of carbon.
B)  allotropes of carbon.
C)  the law of definite proportions.
D)  different carbon ions.E) A) and D)
F) C) and D)

Question 3

Which of the following is a type of radioactive radiation that consists of electrons and is deflected away from the negatively charged plate?

Accepted Answer

A)  α rays
B)  β rays
C)  γ rays
D)  δ rays
E)  ε raysF) All of the above
G) B) and C)

Question 4

______________ are atoms that have the same atomic number (Z)but different mass numbers (A).

Accepted Answer

The answer of ______________ are atoms that have the same...

Question 5

The empirical formula of C6H6 is CH.

Accepted Answer

A) True 
 B)False

Question 6

Which one of these species is an ion?

Accepted Answer

A)  B3+
B)  NaCl
C)  He
D)  (14
C)  
E)  None of these species is an ion.F) None of the above
G) B) and E)

Question 7

How many neutrons are there in an atom of lead whose mass number is 208?

Accepted Answer

A)  82
B)  126
C)  208
D)  290
E)  none of themF) C) and D)
G) D) and E)

Question 8

Which of these elements is chemically similar to potassium?

Accepted Answer

A)  calcium
B)  arsenic
C)  phosphorus
D)  cerium
E)  cesiumF) A) and E)
G) B) and E)

Question 9

What is the name of Mn(CO3) 2?

Accepted Answer

A)  manganese carbide
B)  magnesium(IV) carbonate
C)  manganese(II) carbonate
D)  magnesium(II) carbonate
E)  manganese(IV) carbonateF) C) and E)
G) B) and E)

Question 10

Which of the following is a metalloid?

Accepted Answer

A)  Carbon,C,Z = 6
B)  Sulfur,S,Z = 16
C)  Germanium,Ge,Z = 32
D)  Iridium,Ir,Z = 77
E)  Bromine,Br,Z = 35F) C) and E)
G) A) and E)

Question 11

The chemical name for ClO3- is "chlorate ion".What is the common name for HClO3?

Accepted Answer

A)  hydrochloric acid
B)  chloroform
C)  hydrogen trioxychloride
D)  chlorous acid
E)  chloric acidF) B) and D)
G) C) and E)

Question 12

Atoms of the same element with different mass numbers are called

Accepted Answer

A)  ions.
B)  neutrons.
C)  chemical groups.
D)  chemical families.
E)  isotopes.F) C) and E)
G) B) and E) E

Question 13

Which of the following is the oxoanion of bromine called the bromate ion?

Accepted Answer

A)  BrO3-
B)  BrO32-
C)  BrO42-
D)  BrO2-
E)  BrO-F) C) and D)
G) A) and B)

Question 14

An atom of the isotope sulfur-31 consists of how many protons,neutrons,and electrons? (p = proton,n = neutron,e = electron)

Accepted Answer

A)  15 p,16 n,15 e
B)  16 p,15 n,16 e
C)  16 p,31 n,16 e
D)  32 p,31 n,32 e
E)  16 p,16 n,15 eF) C) and D)
G) A) and B) B

Question 15

There is only one distinct empirical formula for each compound that exists.

Accepted Answer

A) True 
 B)False  True

Question 16

Which of these elements is chemically similar to magnesium?

Accepted Answer

A)  Sulfur
B)  Calcium
C)  Iron
D)  Nickel
E)  PotassiumF) B) and D)
G) None of the above

Question 17

What is the formula for the permanganate ion?

Accepted Answer

A)  MnO2-
B)  MnO4-
C)  MgO42-
D)  Mn2O7-
E)  MgO22-F) None of the above
G) A) and C)

Question 18

Two isotopes of an element differ only in their

Accepted Answer

A)  symbol.
B)  atomic number.
C)  atomic mass.
D)  number of protons.
E)  number of electrons.F) A) and B)
G) B) and D)

Question 19

What binary compound would be formed from barium ions and fluoride ions?

Accepted Answer

A)  Ba2F3
B)  BaF3
C)  BaF
D)  Ba2F
E)  BaF2F) A) and C)
G) None of the above

Question 20

Millikan's oil-drop experiment

Accepted Answer

A)  established the charge on an electron.
B)  showed that all oil drops carried the same charge.
C)  provided support for the nuclear model of the atom.
D)  suggested that some oil drops carried fractional numbers of electrons.
E)  suggested the presence of a neutral particle in the atom.F) A) and D)
G) A) and B)

Exam 2: Atoms Molecules and Ions

Iron(III) chloride hexahydrate is used as a coagulant for sewage and industrial wastes.What is its formula?

Correct AnswerverifiedShow Answer

C(graphite) and C(diamond) are examples of

Correct AnswerverifiedShow Answer

Which of the following is a type of radioactive radiation that consists of electrons and is deflected away from the negatively charged plate?

Correct AnswerverifiedShow Answer

______________ are atoms that have the same atomic number (Z)but different mass numbers (A).

Correct AnswerverifiedShow Answer

The empirical formula of C6H6 is CH.

Correct AnswerverifiedShow Answer

Which one of these species is an ion?

Correct AnswerverifiedShow Answer

How many neutrons are there in an atom of lead whose mass number is 208?

Correct AnswerverifiedShow Answer

Which of these elements is chemically similar to potassium?

Correct AnswerverifiedShow Answer

What is the name of Mn(CO3) 2?

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Which of the following is a metalloid?

Correct AnswerverifiedShow Answer

The chemical name for ClO3- is "chlorate ion".What is the common name for HClO3?

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Atoms of the same element with different mass numbers are called

Correct AnswerverifiedE

Which of the following is the oxoanion of bromine called the bromate ion?

Correct AnswerverifiedShow Answer

An atom of the isotope sulfur-31 consists of how many protons,neutrons,and electrons? (p = proton,n = neutron,e = electron)

Correct AnswerverifiedB

There is only one distinct empirical formula for each compound that exists.

Correct AnswerverifiedTrue

Which of these elements is chemically similar to magnesium?

Correct AnswerverifiedShow Answer

What is the formula for the permanganate ion?

Correct AnswerverifiedShow Answer

Two isotopes of an element differ only in their

Correct AnswerverifiedShow Answer

What binary compound would be formed from barium ions and fluoride ions?

Correct AnswerverifiedShow Answer

Millikan's oil-drop experiment

Correct AnswerverifiedShow Answer

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The empirical formula of C₆H₆ is CH.

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What is the name of Mn(CO₃) ₂?

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The chemical name for ClO₃^- is "chlorate ion".What is the common name for HClO₃?

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E

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B

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True

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